VLT
®
Series 3500
63
★
= ROM default setting.
✔
= Normal Danfoss setup. Text in ( ) = display text. Figures in [ ] are used when communicating with the bus.
102 Setting of Current Limit (SET CUR.LI)
Value:
★
Pre-programmed value
(PROGRAM.VALUE)
[0]
Voltage signal (10VDC SIGNAL)
[1]
Current signal (20 mA SIGNAL)
[2]
Function:
Although not commonly done in HVAC applications, speed
can be controlled by means of the current limit, which al-
lows indirect control of the torque. The current limit is set in
parameter 209, or by means of a current or voltage signal
in parameter 412 or parameter 413.
Description of choice:
Pre-programmed value [0] is chosen if a fixed, set limit for
the current limit is desired. This is the normal method of op-
eration. The current limit is set in parameter 209.
Voltage signal [1] is selected if the current limit is to be ad-
justable during operation by means of a 0 to 10 V analog
signal on analog input 53 (parameter 412). 0 V will corre-
spond to 0% current, and 10 V will correspond to the value
in parameter 209.
Current signal [2] is selected if the current limit is to be ad-
justable during operation by means of a 0 to 20 mA analog
signal on analog input 60 (parameter 413). 0 mA will corre-
spond to 0% current limit, and 20 mA will correspond to the
value of parameter 209.
NOTE:
Both a start command and a speed reference com-
mand must be provided to run with current limit
control.
DANGER
!
If an analog signal is used to set current limit, the motor
may rotate for up to five seconds when the drive is turned
on, even if the current limit setting is 0.
103 Motor Power (MOTOR POWE)
Value:
Depends on unit
Small size (in kW)
[0]
Middle size (in kW)
[1]
Larger size (in kW)
[2]
Function:
This parameter allows a choice of the kW value that best
matches the rated motor power.
The factory setting will be for the nominal kW equivalent of
the horsepower size on the drive nameplate.
Description of choice:
Check the rated motor power on the motor nameplate. If it
is not equal to the nominal horsepower rating on the drive
nameplate, select the most appropriate size. (1 HP = 0.746
kW)
104 Motor Voltage (U
M,N
)(MOTOR VOLT)
Value:
Only 200-230 V units
★
200 V
[0]
✔
208/220 V
[1]
230 V
[2]
Only 380-415 V units
★
380 V
[3]
400 V
[4]
415 V
[5]
440 V
[6]
Only 440-500 V units
440 V
[6]
★
460 V
[7]
500 V
[8]
Function:
The rated voltage that most closely matches the motor
nameplate voltage can be selected.
Description of choice:
Parameter 107 and 109 are changed automatically. All val-
ues can be addressed via the bus.
If VLT Type 3575-3800 drives do not show the required
lower voltages, make this selection through parameter 650.
This is also chosen Quick Set Up Menu step 1.
